I believe the only suction would be that required to pull the fluid from
the overflow bottle back into the cap-tank during cool-down. If the tank is
close to the same level, the suction would be trivial if it could be
measured at all.
Cheers,
Pete
On Tue, Feb 11, 2020 at 6:45 AM Kingsley Hurst <kingsnjan@westnet.com.au>
wrote:
> kingsnjan@westnet.com.au>
>
> =EF=BBHello Rowland,
>
> I am at a loss to know what would cause suction in the overflow hose.
>
> Presumably you know there were instructions years ago to increase the siz
e
> of the hole in the lid of the overflow bottle. If that hole is clear, I
> don=99t see how there could ever be pressure or suction in the
> overflow hose.
>
> I am using a piece of clear plastic tubing and not having any problems bu
t
> if I could find a better quality clear tubing, I would use it.
>
> Regards
> Kingsley in Oz.
>
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